Gyrating bolting-cloth cleaner



April 7, 1931. A. GILLESPIE 1,799,416

GYRATING BOLTING CLOTH CLEANER Filed March 11, 1929 @0 0&0 Q0 00 0=ig 0 0 0 0 Q W 6 o 0 gmmtov cloth cleaners used in flour bolting machines; and similar structures 'having slftl'ng sieves;

Patented Apr. 1931 ALnXAnnna ernrnsrin,orrrrrsrrnr ILLINOIS ,7

eraarnieronrme onorrr swims,

Application madman 11,

This invention relates tocertain new and useful improvements in gyrating bolting and has for one of its objects to provide a device of this character in whichprovision is made for jarring and preventing the clog ging of the bolting fabric, and foreliminat- .result automatically andfwithout injury to.

ing the wear on the frame members which lo support the fabric caused by the lateral poundi'ngof. the cleaning means against the sleve'supportlng frame.

' 'Inthe various forms of, bolting in which finely divided bolting fabric is employed, the meshes fof the fabric are liable to' become clogged by particles of the material passing therethrough adhering to thefabric, and require to be continuously tapped, rapped or slightly jarred to relieve the fabric from the adhering.particles,and to accomplish this the supporting frames of the boltingfabric is the main object of the present invention.

improved cleaner device may be applied to any 'ofthe various forms of machines in which vibratory vb )ltin'g'fabrics are employed, such as flour bolts andthe like,jbut

' is" more particularly applicable to the class applied to the frames,and for the/purpose of illustration a screen frame of a machine of this character is shown.

In the accompanying drawing in which like reference numerals indicate corresponding parts,

Figure 1 is a plan view of a frame without the bolting fabric, and showing aperforated metallic bottom.

Figure 2 is a transversesection with the I v V e l tom; 1t w ll be ev dentthat as the gyrating bolting fabric in position on the frame.

Figure 3 is an enlarged sectional detail of Fig. 1 including one of the movable cleaning elements; and

Figure 4 is a detail illustrating a modificaj tion of said bottom.

The supporting frame is indicated as a whole at 10, and is preferably divided by partitions 11 into aplurality of 'compartments, four being shown for illustration, but any 1 number of the compartments may be pro-' material maybe employed of correspondingly large mesh as indicated at'15 in, Figure 4:, through which the bolted material freely passes.

lined by thepartitionsfl11-isacleaner device in which a gyratingvibratory, movement is I 1929. x Serial No. 345,996. g

'vided, depending on the size.of the machine in wh ch the improved' device is installed.

The frame 10 is covered on the upper side with the bolting fabric, indicated at 12, and 7 attached to the lower face ofthe' frame is a perforated-element indicated at 13. Y

l The perforated element may be a metal 1 plate as indicated in Figuresl and 2, with relatively large apertures 14, or a wire, screen Located in' eachof the icompartl nentsde- I i 16. These cleaner devices may be of any suitable material but'in practice sections of felt or other comparatively soft material prefer;

ably having a semi-cylindrical bottom'round- 7 ed in U-shape in cross section as shown have :0 been found to operate satisfactorily. Each cleaner-device is providedwith a knob-like projection 17;smaller indiam'etcr than the apertures 14. The cleaner devices are of less I size vertically than the space interposed bc- '7 tweenthe fabric 12and the perforated ele- 'Inent13or 15. The diameter ofthe "openings 14 of the perforated element 13, or, wire screen 15, may be 2 to 2 times greater than "the cleaner projection 17, such that the cleaner "-projection may have ample clearance within the openings to have free play. Thefsemiglobular 'knob of projection 17 is ofsuch depth that itprojects through the openings 14: and l5 and below the surfaces of the metal; sieve bottom. In operationasthe cleaner body lies .flat on the metal sievebottom and I the cleaner knob projecting through the open.-,

ingand below the surfaces of the sieve botmotion istransmittedto the cleaner body it;

will carry the cleaner projection or knob; in a' swingingkickagainst the side or sides of the opening and thus cause the cleaner to, jump or leap 1n an oblique angular-direction; at

the sieve'bottom, striking and tapping or jarring the bolting fabric. "As'the action of cleaner is in an angular direction it is thus continuously'changing its position from aperture to aperture overthe entire sieve bottom,

i like projection secured to the ,bottom of said tapping or jarring the bolting fabric throughout its whole surface. Also, the destructlve lateral pounding of the inner surfaces of the sieve frame, by the cleaner element, is eliminated and the usefulness oftlie sieve frame greatly extended.

. Some flour bearing stocks are in moisture content and of very fine granulation and therefore most difficult to bolt. The cleaner projection may be extended or lengthened to project farther through the aper tures in the sieve bottom and thus intensify the tapping or jarring ofthe bolting fabric, and thus the perfect bolting control of variable stock conditions is obtained.

The rounded bottom of said'body facilitates inclining the upper surface soflthat it doesnothit flat against the sieve bottom but inclinedly with a swinging kick. Thusa double kick is given asthe upper surface of the body hits the fabric, and the fluted surface with sharp contact edges shown in Fig. 3 promotes the sitting of the'fiourthrough the fabric. 'The longitudinal grooveshown in. the uppersurface prevents the clinched ends. of the prongs of shank holding the knob 17 to the roundedbottom, from contact with the fabric. Furthermore, the depthof this rounded projection controls the force of its jump whenthe edge of the aperture strikes it a lesser projectionthanthat shown makes J the body kick with .less force against the fabric, while a deeper .taper on said .projectioncauses it to hit harder. Thus I can-substitute a projection that is suitable to the material being bolted.

-Having now described my invention, that which I claim to be new and desire to protect by Letters Patent, .is

1. bolting sieve cleaner comprising a felted body having a substantially semi-cylin drical bottom, and a tapering-metallicknobbody, substantially as described.

2. A boltingsieve cleaner comprising a felted body having a substantially semicylindrical bottom and a central longitudinal groove in the top and a rounded metallic projection on said body having vertical prongs extending upward and clinched in said groovefsubstantially as described.

3. A bolting sieve cleaner comprising a felted body having a substantially semicylindrical bottom andfiuted top .withalonitudinal groove and a rounded metallic proection having a shank extending upward into said .grooveand secured therein, substantially as described. I

4. In avibratory sieve .for sifting machines, the combination with asuitable frame forming an interposedspace .betweena boltsieve top comprising albody of substantially lesser height than and loosely disposed in said-space and having a rounded projection secured to the bottom of said body of a size substantially lessthan the size of said apertures .for allowing initial lateral movement therein, substantially as described.

6. Ina sieve for sifting. machines, the combination with a boltingsieve top anda bottom having multiple apertures for passage of boltedmaterial, of a cleaner for said sieve top comprising a felted body of substantially lesser height than the interposed space between the sieve top and bottomand having arounded bottom and loosely disposed in said space, and .a rounded metallic projection secured to'the roundedbottom of said body and of substantially halfthe size of the apertures in said .bottom adapted to kick said body against thesieve top :in its movement from one aperture to'another,successively, substantially as described.

7. Ina sieve .for sifting machines, the combination with a bolting sieve top and a bot- ;tom having multiple apertures for the pas sage ofbolted material, of acleaner for said sieve top comprising asemicylindrical felted body movably. disposed'on saidbottom and of substantially lesserheight than the space between said sieve top and bottom and having 3 .a metallic rounded projectionsecured to the .roundedbottom of saidbody andof substantially halt the size of said apertures adapted :to retard the lateral movement of saidbody,

substantially as described.

In testimony whereof Iaffix my signature.

ALEXANDER GILLESPIE.

ingsieve top and an ap'ertured bottom,.o fia loosely disposed cleaner :for said sievecomraisi g bodyn s t t ly esse .he ght rthim saidspace and having afiutedatop anda 

